I am trying to get my 90 2WD GL back on the road after an overheating
incident that partially melted the lower thermostat housing.

I have replaced the housing, o-rings, suspect hoses and checked thermostat
operation (I have an 80d) and have a new thermo-switch ready to install, only
I can't find the location!

I thought it might need a switch since the fan seemed to turn on less an less
leading up to the meltdown.  The fan used to turn on much more frequently in
the past.

My Bentley (page 19.12) indicates that the switch should be on the left of
the radiator and can be found by "moving the cardboard air deflector to side"
 The bleeder screw is there but no thermo-switch or wiring.

 Am I missing something?  Please help!

As a side note; this is the van I experimented with using dex-cool orange
coolant two years ago.  I found sludge and white particles when performing
the coolant change at 18 months (24K miles) and decided to flush the system
and return to using the blue Autobahn coolant which has been in there for
close to 6K miles before the overheating incident that brought me to this
point.  Is this related?  Who knows.

Thanks in advance for any comments, suggestions or answers!

Salud!
Loretta
87 Syncro GL (w/ new rebuilt engine from Europro- horray!)*
86 Syncro GL*
90 GL
82 Westy L
*running vanagons (the best kind)!